From the World Fishing Network:
Cherry Creek State Park will close to boating on Wednesday, Dec. 1 due to the onset of winter and the seasonal closure of the aquatic nuisance species vessel inspection stations. All waters in the park will be closed to both motorized and non-motorized watercraft. Cherry Creek Reservoir will reopen to boating on March 1, as weather allows.
More Cherry Creek watershed coverage here.
More South Platte River basin coverage here.